Performance characteristics of a small-capacity directly cooled refrigerator using R290/R600a (55/45)
- Authors
- Lee, Moo-Yeon; Lee, Dong-Yeon; Kim, Yongchan
- Issue Date
- 6월-2008
- Publisher
- ELSEVIER SCI LTD
- Keywords
- domestic refrigerator; binary mixture; propane; isobutane; experiment; comparison; R134a; performance
- Citation
- INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, v.31, no.4, pp.734 - 741
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
- Volume
- 31
- Number
- 4
- Start Page
- 734
- End Page
- 741
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/123418
- DOI
- 10.1016/j.ijrefrig.2007.11.014
- ISSN
- 0140-7007
- Abstract
- In this study, the performance of a small-capacity directly cooled refrigerator was evaluated by using the mixture of R290 and R600a with mass fraction of 55:45 as an alternative to R134a. The compressor displacement volume of the alternative system with R290/R600a (55/45) was modified from that of the original system with R134a to match the refrigeration capacity. Both systems with R290/R600a (55/45) and R134a were tested, and then optimized by varying the refrigerant charge and capillary tube length under experimental conditions for both the pull-down test and the power consumption test. The refrigerant charge of the optimized R290/R600a system was approximately 50% of that of the optimized R134a system. The capillary tube lengths for each evaporator in the optimized R290/R600a system were 500 mm longer than those in the optimized R134a system. The power consumption of the optimized R134a system was 12.3% higher than that of the optimized R290/R600a system. The cooling speed of the optimized R290/R600a (55/45) system at the in-case setting temperature of -15 degrees C was improved by 28.8% over that of the optimized R134a system. (C) 2007 Elsevier Ltd and IIR. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.